Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -13 .. 13.

A068738

Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -13 .. 13.

Terms

    a(0) =1a(1) =27a(2) =199655a(3) =547436323149

External references